Dust-collector.



No. 744,645. PATENTE'D Nom-1v, 1903. lJ. s. THURMAN.

DUST COLLECTOR.

APPLICATION FILED JUNE 25,1903. I NO MODEL. 2 SHEETS-SHEET 1.

Patented November 17, 1903.

PATENT OFFICE.

JOHN SQTHURMAN, F sT. LOUIS, MISSOURI.-

DUST-COLLECTOR.

SPECIFICATION forming part of Letters Patent No. 744,645, dated November17, 1908. Application inea Junas, laca'. seria No. 4169.999. (No model.)

To all whom t may concerm- Beit; known that I, JOHN S. THURMAN, acitizen of the United States, residing at the city of St. Louis, in theState of Missouri, have invented a certain new and usefulDust-Collector, of which the following is such a full, clear, and exactdescription as will enable any one Vskilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, forming part of this l and a pneumaticrenovating-tool, such as is `used for cleaning carpets, rugs, and thelike.

My invention consists in part in the combination, with an air-chamberprovided with a foraminous diaphragm, of a water-chamber, an inlet onone side of said diaphragm, a conduit connecting the other side of saiddia-v phragm with said water-chamber below the water-line thereof, andan outlet for said water-chamber above the water-line thereof.`

My invention also consists in certain other` novel features and detailsof construction, all of which will be described` in the followingspecification and pointed out in the claims axed hereto.

In the' accompanying drawings, which illustrate one formofdust-collector made in accordance with my inventiomFigure 1 is avertical central section. Fig.[2 is a top plan view of one of theforaminous diaphragms, together with the frame supporting the sam'e; andFig. 3 is a side elevation on a reduced scale, showing therenovating-tool connected with the collector.

Like marks of reference refer to similar parts in the several views ofthe drawings.

' 5 is the casing of the collector,which is preferably cylindrical inform and preferably made of sheet metal. Thecasing 5 isdivided, by meansof the partition 6,into an upper or air chamber 7 and a lower or waterchamber 8. Leading from nearl the lower end of the air-chamber 7 is aninlet pipe or hose 9, to the end of which is attacheda renovatingtool 10of any suitable-construction. Leading from near the top of thewater-chamber 8 is a pipe 11, which is connected to a suitablcsuction-pump. The air-chamber 7 and 'the chamber 7 through anoutlet-opening 13` -cover 22 is provided with a packing-ring 23,

4 tobe cleaned and the dust and air from the water-chamber 8 areconnected by means of a pipe 12; The 'pipe 12 communicates with near thetop of said chamber and with the Water-chamber 8 through aninlet-opening 14 near the bottom of said chamber. Situated in the pipe12 is a stop-cock 15. Secured in the air-chamber7 above theinlet-pipc 9is an annular support 16, upon which are carried a number of. foraminousdiaphragms. These diaphragme each consist of a circular piece ofl cloth17, glued 'or otherwise secured to the lower face of an annular ring orframe'18. 65

These rings or frames 18 are preferably, formedof wood and are suppliedwith rods or wires 19, extending fromsaid frame to a hub 20 at thecenter thereof. These wires 19 serve as reinforcements of the diaphragmproper, 17; The diaphragms are held firmly together by meansofcoil-springs 21, which rest upon the top frame 18 and are held down bymeans of a removable'cover 22. This coperating-with the upper edge ofthe casing 5, so as to form an air-tight joint.y The cover 22 is held inposition by means of bol-ts 24 passing through the said cover andthrough' lugs 25, carried on the casing 5. The cover 22 is also providedwith a stop-cock 26 for the purpose hereinafter to be described. Thechamber 7 is provided below the support 16 withvan opening 27, coveredby a. screwcap 28. 'The water-chamber 8 is provided below theoutlet-pipe ll with a stop-cock 30, which is adapted to be secured to apipe or hose yfor the purpose of filling the water-chamber 8 with water.Below the stop-cock 30 and determining the water-line ofthe Water-tankis a petcock 31.' At the lower end ofthe wa-v ter-chamber is adrain-cock 32. l

The operation of my collector is as follows: The inlet-pipe 9 beingconnected with the renovating-tool 10 and the outlet-pipe 11 with a.suitable suction-pump, the renovating-tool lO is passed over the carpetor other article same passes up fromthe tool and pipe 9 into the lowerend of the air-chamber 7. The air then passes up through they variousfbraminous diaphragms 17, which extract from it all the coarserparticles of dust. These diaxoo I phragms being held firmly together bymeans of the springs 2l the dust cannot pass around them. The air thusfreed of all the coarser particles of dust passes through outlet-opening13, pipe 12, and inlet-opening 14 into the lower end of thewater-chamber 8. It thence passes up through the water in thewaterchamber, which extracts from the' air the remaining traces of dust.The air then passes out through the outlet-pipe 11 to the suctionpump.In order to partially clean the diaphragm 17, the cap 28 is removed andan airblast is passed down through the stop-cock 26, which thus blowsalarge part of the dust out of the air-chamber through the opening 27.In order to thoroughly clean the diaphragm 17, however, the removablecap 22 is removed from the collector, so that the said diaphragm can belifted out and cleaned in any suitable manner. In order to fill thewater-chamber 8, the stop-cock 15 in the pipe 12 is closed`andft`hestop-cock 30 after being connected with a suitable water-supply isopened. The petcock 3l provides means for ascertaining when the waterhas reached the desired level. In order to discharge the water after ithas become charged with dust, the drain-cock 32 is opened, so as toallow the water to run out.

-an air-chamber, of a foraminous diaphragm therein, an inlet at one sideof said diaphragm, an outlet at the other side of said diaphragm, awater-chamber, a conduit connecting said air-chamber with saidwaterchamber below the water-line thereof, and an outlet for saidwater-chamber above the water-line thereof. t

2. In adust-collector, the combination with .an air-chamber, of ahorizontal foraminous an air-chamber, of a plurality of removableforaminous diaphragme therein, an inlet at one side of said diaphragms,an outlet at the other side of said diaphragms, V.a water-chamber, aconduit connecting said air-chamber with said Water-chamber below theWaterline thereof, and an outlet for' said waterchamber above thewater-line thereof.

4. In a dust-collector, the combination wit an air-chamber, of aforaminous diaphragm therein, a normally open inlet at one side of saiddiaphragm connected with a renovatingtool, a| normally open outlet atthe other side of said diaphragm, a normally closed-inlet at the sameside of said diaphragm as said open outlet, and a normally closed outletat the same side of said diaphragm as said open inlet.

In testimony whereof I have hereunto set my hand and aixed my seal inthepresence of the ltwo subscribing witnesses.

JOI-IN S. THURMAN. Witnesses:

J AMES H. BRYsoN, W. A. ALEXANDER.

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